coder 7.x-2.1

Changes since 7.x-2.0:

• #1916238 by cthos | klausi: Fixed __toString is invalid - only PHP magic methods should be prefixed with a double underscore.
• The Boolean type hint does not exist, bool should be used.
• Moved function call detection to its own method to be reusable.
• #2077539 : Fixed Interface PHP_CodeSniffer_MultiFileSniff not found.
• #2055383 by opi: Fixed Requirements tell user a wrong drush command to install PHP CodeSniffer.
• #2089569 by bkonetzny: Fixed Missing PHP_CodeSniffer prevents running update.php.
• #1520122 by TwoMice: add support for T_THROW in coder_format.php
• #1938342 found by maliky: fix warning message to use ++$foo instead of $++foo.
• remove debugging
• #2038755 reported by tikaszvince: fix _substr
• Added a check for white spaces at the begin or end of translatable strings in t().
• Fixed white space detection in translatable strings.
• Improved comment shortdescription message.
• "object" should be used instead of "stdClass" for @param/@return data types.
• Added argc and argv to global variable white list.
• Fixed PHP shorttag warnings in txt and info files.
• There is no 'number' @param data type, only 'int'.